Vehicle-jack.



, figawm B. W. MoGARROLL.

VEHICLE JACK. APPLICATION IILE D JULY 7, 1913.

1,087,250, Patented Feb. 17,1914.

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EDWARD MGOARROLL, OF PITTSBURGH, PENNSYLVANIA.

VEHICLE-JACK.

Specification of Letters, Patent.

Patented Feb. 1?,1914.

Application filed July 7, 1913., Serial No. 777,654.

' normal support through its wheels.

In the accompanying drawing, which forms part of my specification, I have illustrated a single embodiment of my invention,

such embodiment comprising means for raising all the wheels simultaneously from the ground.

Figure 1 isa plan view of an automobile chassis with lifting mechanism operatlvely arranged thereon; Fig, 2 is an elevation-ofthe disclosure of Fig. 1; Fig. 3 is a detail sectional .view to enlarged scale, the plane of section being indicated by the .line IIIIII, Fig. 1; and Fig. 4 is a side viewv of the disclosure of Fig. 3, the'movable.

sleeve being-shown in section.

In Figs. 1 and 2 the lifting mechanism is shown in its normal upward or inoperative position, while in Figs. 3 and 4 a lifting jack is shown in its operative wheel-raising position.

In the several figures like numerals are used to designate like parts.

In the embodiment of my invention illustrated in the drawings a frame 1, upon which is mounted a motor .2, is normally sustained through front wheels 3" and rear driven wheels 4, the motor being operatively connected through drive shaft 5 to the rear driven axle 6, as'is usual in. automobile con- Stmotion; i

The means which I have illustrated here-. in for raising the wheels 3 and 4 from the ground by means of the motor or propelling power of the vehicle, comprise. a plurality of jacks 7, consisting of wheel segments of larger radius than that of the periphery of the wheel, one of such jacks being mounted adjacent to each wheel. The jacks, which are rotatably mounted preferably upon the secured to the wheels.

sitions indicated in Figs. 1 and'2,( the wheel axles and are longitudinally slidable thereon, are provided-with clutch detents 8 adapted to engage corresponding detents 9 In order to move the jacks to and from engagement with the wheels, I provide a rod 10, connected by means of links 11 to the sleeve 12 of each jack, such rod being movable by means, of a hand lever 13, secured to theshaft 1 1,

which shaft in turn is connected to the rod by means of an arm 15. 'As willreadily be seen, each link 11 is connected to a sleeve 12 by means of a collar 16, within which such sleeve may rotate. In order to hold the jacks in upright or ino erativeposition, the, frame 1 is provided wit stops 1 adapted to engage p ns 18 secured to the jacks.

In operation, when the vehicle is running normally, the jacks 7 are in the upright p0,-

ms 18 being engaged by the stops 1 en it is desirable to raise the vehicle from its support through the wheels,'-the hand lever 13; is released and moved forwardly, thus causing the rod 10 to move in the opposite direction, the jacks 7 being thrust outwardly along the axles by means of the links 11. In their outward positionsthe detents 8 of the jacks engage the detents 9 of the wheels 3, 4:, so that when the vehicle is driven a half revolution of the wheels it will be supported upon the jacks. In such position it will readily be seen that the vehicle is ready for machine or tire repairs. Also, by raising the machine each time a substantial stop is made and during such time as it stands in a arage the wear of the tires, due to the weight of the machin on them, will be eliminated.

I claim,- Y

1. In a motor vehicle, the combination of a frame normally supportedby' a plurality of wheels and having a propelling motor mounted thereon, drivingv connection between said motor and a pairbf-said wheels, a rotatable lifting jack mounted adjacent to oneof said wheels and heldnormally in upward position, and means for bringing said jack-in clutch with said wheel, thereb ren-' dering the advance of the vehicle e ective to cause said jack to raise-its engaged wheel from the ground.

' 2. In a motor vehicle, the combination of a" frame having as a part thereof a rotatable axle, wheels secured to said axle and provided with jack-engaging detents, a lifting 110 5 sit-ion, and means for sliding said jack 10n- Witmsses;

gitudinafly of said shaft and into engaga- PAT J. CRITCHLUVL mam wii n mime 1% mzw'xs Tommasozm, 

